The last time we looked at single rod cylinders, which are pointed with their stems extending towards the sky.

We found that the directional valve closed two ports of the cylinder is the only way to push the cylinder down to allow the loss of fluid outside of the bottle. We have found that can not fall down the rod and the piston, otherwise a solid cylinder of liquid no additional space for the volume of steel that has the trunk.

Lets end this week with a look at the bottles that are attached to the head. The stem of the cylinder extends downward.

Again, this is a fairly common misconception that a worn piston seal to move fluid to the piston rod side of the cylinder side, crawl so in line.

We will start with the directional control valve is closed (we ball valves at each cylinder port in the vicinity has just made clear) and the stem is fully retracted. Suppose that the cylinder is filled with hydraulic fluid.

If the piston seal is absent, and we have to crawl a load on the cylinder rod?

When the bottle full of steel (piston and rod was) and liquid () largely non-compressible fluid, what would happen if the parent does not give creep into the expansion?

If the rod goes well, the cylinder open and closed, the amount of volume occupancy lose accordingly. What fills the gap which is generated inside the cylinder?

A large force (heavy) pulling on the end of the stalk may cause some expansion, but the whole movement would be very low. Since the blank would be very long in a tiny fraction of an inch.